LS7 Part Numbers...(Post Requests and Ones You Have)
LS7 Part Numbers for LS7 Head Swaps...(Post Requests and Ones You Have) Since no one is updating the part numbers in the sticky, here are some LS7 part numbers. This is mostly for the people who want to use LS7 heads on a sleeved LS1/6 block, like myself.
12578450 - $852.15 ea. - LS7 Head, Bare, 70cc Combustion Chamber
12569011 - $261.54 - LS7 Composite Intake Manifold
12579617 - $7.78 ea. - LS7 Exhaust Rocker 1.8:1
12579615 - $7.78 ea. - LS7 Intake Rocker, 1.8:1 Offset
12593344 - $3.43 ea. - LS7 Pushrod
12569112 - $96.52 - LS7 Fuel Rail, No Injectors
12570790 - $214.20 - LS2/7 Throttle Body, 90mm Single Bore
12591644 - $57.81 ea. - LS7 Intake Valve, 2.20" Titanium
12578455 - $27.52 ea. - LS7 Exhaust Valve, 1.61" Sodium Filled Stem
12578457 - $4.83 ea. - LS7 Valve Spring
12596509 - $5.93 ea? - LS7 Intake Valve Lash Cap
Need Part Numbers/Prices For:
Valve Spring Retainers
Valve Spring Locks
Head Bolts
Head Gaskets
Valve Covers
Some Pics...
12578450 - $852.15 ea. - LS7 Head, Bare, 70cc Combustion Chamber
12569011 - $261.54 - LS7 Composite Intake Manifold
12579617 - $7.78 ea. - LS7 Exhaust Rocker 1.8:1
12579615 - $7.78 ea. - LS7 Intake Rocker, 1.8:1 Offset
12593344 - $3.43 ea. - LS7 Pushrod
12569112 - $96.52 - LS7 Fuel Rail, No Injectors
12570790 - $214.20 - LS2/7 Throttle Body, 90mm Single Bore
12591644 - $57.81 ea. - LS7 Intake Valve, 2.20" Titanium
12578455 - $27.52 ea. - LS7 Exhaust Valve, 1.61" Sodium Filled Stem
12578457 - $4.83 ea. - LS7 Valve Spring
12596509 - $5.93 ea? - LS7 Intake Valve Lash Cap
Need Part Numbers/Prices For:
Valve Spring Retainers
Valve Spring Locks
Head Bolts
Head Gaskets
Valve Covers
Some Pics...
Last edited by Ferocity02; Dec 16, 2005 at 05:06 PM.
Originally Posted by half-n-half
do we know if ls7 heads will bolt to an ls1 block..?
that may be quite an upgrade if all that u have to buy is the 270 intake...
that may be quite an upgrade if all that u have to buy is the 270 intake...
Why doesnt anyone want to use the LS7 block instead of resleeving an LS1? Can you just get the cam and knock sensor adaptors and put a LS1 stroked crank? Then you get a factory sleeved block.
P/N for the block if anyone has it?
P/N for the block if anyone has it?
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Verdad Gallardo I think the problem with using the LS7 block is that you are going to need so many other LS7 parts like the oil pan, windage tray, oil pump system, front and rear covers, valley cover, main caps, etc... Which may make it cheaper to buy a sleeved LS1/6 block and be able to use most the LS1 parts. I am curious to see if LS1/6 cranks and cams with work in an LS7 block.
Originally Posted by Ferocity02
I think the problem with using the LS7 block is that you are going to need so many other LS7 parts like the oil pan, windage tray, oil pump system, front and rear covers, valley cover, main caps, etc... Which may make it cheaper to buy a sleeved LS1/6 block and be able to use most the LS1 parts. I am curious to see if LS1/6 cranks and cams with work in an LS7 block.
TECH Enthusiast
Joined: Sep 2003
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Likes: 66
Judging from the pictures that appeared in Chevy Power magazine, the block has all the mounting holes for the LS2 oil pump and the oil pan from the LS2 will bolt up. The valley cover also would, even though there are several cylindrical posts under it. What is the issue anyway even if you had to use the stock valley cover. The LS2 cover is 48 bucks so the LS7 wont require a mortgage.
The use of the dry sump system isn't mandatory but even if it was along with the valley cover and timing cover, it is still a lot cheaper than 1300 for sleeves and 1000 to get them installed. This block will be used extensively for cheap (5k) strokers like the ls2 402. All the parts mentioned above (front and rear covers-don't know why you think these wont fit even with a different crank it makes no sense to think these dimensions would change in production raising the costs for these covers, oil pump, valley cover, windange tray, pickup tube) are not going to exceed 2300 bucks.
I don't think this block is anywhere as strong as a darton re-sleeve.
The use of the dry sump system isn't mandatory but even if it was along with the valley cover and timing cover, it is still a lot cheaper than 1300 for sleeves and 1000 to get them installed. This block will be used extensively for cheap (5k) strokers like the ls2 402. All the parts mentioned above (front and rear covers-don't know why you think these wont fit even with a different crank it makes no sense to think these dimensions would change in production raising the costs for these covers, oil pump, valley cover, windange tray, pickup tube) are not going to exceed 2300 bucks.
I don't think this block is anywhere as strong as a darton re-sleeve.
Last edited by Spinmonster; Oct 27, 2005 at 01:34 PM.
The point is that using an LS7 block will require you to buy LS2/7 parts that you wouldn't otherwise have to buy if you are using parts of your old LS1/6 engine on a sleeved LS1/6 block.
Part number 12596509
https://ls1tech.com/forums/generation-iv-internal-engine/402774-lash-pads-ls7-valvetrain.html
They go on the tips of the intakes, as they are not hardened. They reduce wear and provide good surface area for the rockers.
https://ls1tech.com/forums/generation-iv-internal-engine/402774-lash-pads-ls7-valvetrain.html
They go on the tips of the intakes, as they are not hardened. They reduce wear and provide good surface area for the rockers.
Originally Posted by Builder
The valley cover part number is 12570471. This may include the gasket and bolts. It's on the way and I will edit this post.
